Qwen 3.5 Medium

Qwen 3.5 Medium is a family of open-weight language models released by Alibaba’s Tongyi Lab on February 24, 2026. The series comprises four variants: the mixture-of-experts Qwen3.5-122B-A10B (122 billion total parameters, 10 billion active) and Qwen3.5-35B-A3B (35 billion total, 3 billion active), the dense Qwen3.5-27B, and the lightweight Qwen3.5-Flash. All models support a 128,000-token context window and are distributed under the Apache 2.0 license. In published benchmarks, the 122B-A10B configuration achieves 74.2 on MMLU-Pro and 81.3 on HumanEval, compared to 71.8 and 78.5 for the prior Qwen 2.5-235B-A22B (235 billion total, 22 billion active). On MATH-500, it scores 90.2, and on LiveCodeBench it reaches 48.9, exceeding the 22B-active predecessor by 2.8 and 5.1 points respectively. This release is significant because it demonstrates that a 10-billion-active-parameter open model can match or surpass a predecessor with over twice the active parameters across reasoning, mathematics, and code generation, while its permissive license enables self-hosted deployments that directly challenge proprietary mid-tier models.

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